Haws hektrik biache



H. H. BLACHE.

FASTENING STUD FOR EXHAUST VALVES IN INTERNAL COMBUSTION ENGINES.

' APPLICATION FILED SEPT-18.1919.

1,332,316. Patented Mar. 2, 1920.

J n/ Mew/2 0 of a valve casing having a portion fitting in said socket and also having a pair of bolt holes Which register with the first-named holes; a pair of bolts inserted through the second-named holes and having their terniinals threaded, the lower terminals of the bolts being secured in the first-named holes; a pair of cast iron sleeves loosely encircling said bolts and resting at their lower ends upon the valve casing, but terminating short of the threaded upper terminals of the bolts; and a pair of nuts threaded upon said up per terminals and tightened against the upper ends of said sleeves, the intermediate portions of the bolts being reduced in diameter in order to space the surfaces of said portions from the inner Walls ofthe sleeves and the Walls of the bolt holes in the casing to permit the free expansion of said sleeves whereby the latter are caused to impose pressure upon said casing so as to force it against the cylinder head.

In testimony whereof I aifix my signature.

HANS HENRIK BLACHE. 

